JP7536425B2 - COMMUNICATION DEVICE, INFORMATION PROCESSING DEVICE, CONTROL METHOD, AND PROGRAM - Google Patents

Description

The present invention relates to a device that communicates data via wireless communication.

The IEEE802.11 series of standards is known as a WLAN communication standard formulated by the IEEE (Institute of Electrical and Electronics Engineers). WLAN is an abbreviation for Wireless Local Area Network. The IEEE802.11 series of standards includes the IEEE802.11a/b/g/n/ac/ax standards.

Patent Document 1 discloses that the IEEE 802.11ax standard performs wireless communication using orthogonal frequency-division multiple access (OFDMA). The IEEE 802.11ax standard achieves high peak throughput by performing wireless communication using OFDMA. In addition, the IEEE 802.11ax standard achieves multi-user communication in which multiple devices communicate in parallel with each other by performing wireless communication using OFDMA.

The IEEE is considering the IEEE802.11EHT (Extremely High Throughput) standard, a successor to the IEEE802.11ax standard, as the next-generation WLAN communication standard. In the IEEE802.11EHT standard, the expansion of radio bandwidth is being considered in order to improve throughput.

JP 2018-50133 A

When performing multi-user communication, it is necessary to allocate a portion of the frequency band to be used (RU, Resource Unit) to the other device. However, until the IEEE802.11ax standard, the maximum bandwidth of radio waves that could be used was 160 MHz, so there was no suitable frame structure that could communicate information regarding RU allocation when communicating using a bandwidth of 320 MHz.

The present invention aims to enable a communication device capable of communicating using a 320 MHz bandwidth to communicate information regarding RU allocation using an appropriate frame structure.

According to one aspect of the present invention, a communication device includes an EHT MU (Multi User) PPDU (Physical Layer Protocol Data Unit) including an L-STF (Legacy-Short Training Field), an L-LTF (Legacy-Long Training Field), an L-SIG (Legacy-Signal), an EHT-STF (Extremely High Throughput-Short Training Field), and an EHT-LTF (Extremely High Throughput-Long Training Field) following the EHT-STF. the communication device has a transmitting means for transmitting an EHT MU PPDU (EHT-STF), the EHT-STF is arranged after the L-SIG in the EHT MU PPDU, and a field indicating allocation of an RU (Resource Unit) is included between the L-SIG and the EHT-STF, and when the communication device uses a bandwidth of 320 MHz, the field is composed of a number of bits obtained by multiplying a predetermined number of bits indicating allocation of an RU in a 20 MHz subband by 8.

In addition, a communication device according to another aspect of the present invention receives an EHT MU (Multi User) PPDU (Physical Layer Protocol Data Unit) including an L-STF (Legacy-Short Training Field), an L-LTF (Legacy-Long Training Field), an L-SIG (Legacy-Signal), an EHT-STF (Extremely High Throughput-Short Training Field), and an EHT-LTF (Extremely High Throughput-Long Training Field) from another communication device. In the EHT MU PPDU, the EHT-STF is arranged after the L-SIG, and a field representing an allocation of an RU (Resource Unit) is included between the L-SIG and the EHT-STF, and when the other communication device uses a bandwidth of 320 MHz as a bandwidth, the field is composed of a number of bits obtained by multiplying a predetermined number of bits representing an allocation of an RU in a sub-band of 20 MHz by 8.

Also, an information processing device according to another aspect of the present invention includes an EHT MU (Multi User) PPDU (Physical Layer Protocol Data Unit) including an L-STF (Legacy-Short Training Field), an L-LTF (Legacy-Long Training Field), an L-SIG (Legacy-Signal), an EHT-STF (Extremely High Throughput-Short Training Field), and an EHT-LTF (Extremely High Throughput-Long Training Field). In the EHT MU PPDU generated by the generating means, the EHT-STF is arranged after the L-SIG, and a field indicating allocation of RUs (Resource Units) is included between the L-SIG and the EHT-STF, and when the information processing device uses a bandwidth of 320 MHz as a bandwidth, the field is composed of a number of bits obtained by multiplying a predetermined number of bits indicating allocation of RUs in a subband of 20 MHz by 8.

According to the present invention, a communication device capable of communicating using a 320 MHz bandwidth can communicate information regarding RU allocation using an appropriate frame structure.

FIG. 2 is a diagram showing the configuration of a network in which a communication device 202 participates. FIG. 2 is a diagram illustrating a hardware configuration of a communication device 202. 13 is a diagram showing an example of the configuration of a PHY frame of an EHT MU PPDU communicated by a communication device 202. FIG. FIG. 13 is a diagram showing an example of a correspondence between an RU allocation pattern and an RU Allocation subfield in a 20 MHz bandwidth. A diagram showing an example of the configuration of the EHT-SIG-B field when communicating using a bandwidth of 320 MHz.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the attached drawings. Note that the configurations shown in the following embodiments are merely examples, and the present invention is not limited to the configurations shown in the drawings.

Figure 1 shows the configuration of a network in which a communication device 202 according to this embodiment participates. The communication device 202 is an access point (AP, Access Point) that has the role of constructing the network 201. The communication devices 203, 204, and 205 are stations (STA, Station) that have the role of participating in the network 201. Each communication device supports the IEEE802.11EHT standard and can perform wireless communication in accordance with the IEEE802.11EHT standard via the network 201. IEEE is an abbreviation for Institute of Electrical and Electronics Engineers. EHT is an abbreviation for Extremely High Throughput. EHT may be interpreted as an abbreviation for Extreme High Throughput. Each communication device can communicate in the 2.4 GHz, 5 GHz, and 6 GHz frequency bands. Each communication device can also communicate using bandwidths of 20 MHz, 40 MHz, 80 MHz, 160 MHz, and 320 MHz.

The communication devices 202 to 205 can perform OFDMA communication conforming to the IEEE 802.11 EHT standard to realize multi-user (MU, Multi User) communication that multiplexes signals from multiple users. OFDMA communication is an abbreviation for Orthogonal Frequency Division Multiple Access. In OFDMA communication, a portion of the divided frequency band (RU, Resource Unit) is assigned to each STA so that they do not overlap, and the carrier waves of each STA are orthogonal. Therefore, the AP can communicate with multiple STAs in parallel.

Furthermore, communication devices 202-205 can realize MU communication by MU MIMO (Multi User Multiple-Input and Multiple-Output) communication. In this case, communication device 202 has multiple antennas, and can realize simultaneous communication with multiple STAs by allocating one or more antennas to each of communication devices 203-205. Communication device 202 can transmit radio waves to multiple STAs simultaneously by adjusting the radio waves transmitted to each of communication devices 203-205 so that they do not interfere with each other.

The communication device 202 may realize MU communication by combining OFDMA communication and MU MIMO communication. That is, when performing MU communication with multiple STAs, the AP may perform MU MIMO communication in RUs with a certain threshold value or more. For example, when assigning RUs to multiple STAs, communication may be performed with one STA in RUs with a subcarrier count of less than 106, and MU MIMO communication may be performed by multiple STAs in RUs with a subcarrier count of 106 or more.

In this way, when performing MU communication, communication devices 203 to 205 need to obtain information regarding the allocation of RUs to each STA. Therefore, communication device 202 notifies communication devices 203 to 205 using a PHY frame about the allocation of RUs used in data communication to each STA.

Note that although the communication devices 202 to 205 are described as being compatible with the IEEE 802.11 EHT standard, they may also be compatible with at least one of the legacy standards that predate the IEEE 802.11 EHT standard. The legacy standards are the IEEE 802.11 a/b/g/n/ac/ax standards. In addition to the IEEE 802.11 series standards, they may also be compatible with other communication standards such as Bluetooth (registered trademark), NFC, UWB, ZigBee, and MBOA. Note that UWB is an abbreviation for Ultra Wide Band, and MBOA is an abbreviation for Multi Band OFDM Alliance. OFDM is an abbreviation for Orthogonal Frequency Division Multiplexing. NFC is an abbreviation for Near Field Communication. UWB includes wireless USB, wireless 1394, WiNET, etc. It may also be compatible with communication standards for wired communication such as wired LAN.

Specific examples of the communication device 202 include, but are not limited to, a wireless LAN router and a PC. The communication device 202 may be any communication device capable of performing MU communication with other communication devices. The communication device 202 may also be an information processing device such as a wireless chip capable of performing wireless communication conforming to the IEEE802.11EHT standard. Specific examples of the communication devices 203 to 205 include, but are not limited to, a camera, a tablet, a smartphone, a PC, a mobile phone, and a video camera. The communication devices 203 to 205 may be any communication device capable of performing MU communication with other communication devices. The communication devices 203 to 205 may also be information processing devices such as a wireless chip capable of performing wireless communication conforming to the IEEE802.11EHT standard. The network in FIG. 1 is a network configured with one AP and three STAs, but the number of APs and STAs is not limited to this. The information processing device such as a wireless chip has an antenna for transmitting the generated signal.

Figure 2 shows the hardware configuration of the communication device 202 in this embodiment. The communication device 202 includes a memory unit 301, a control unit 302, a function unit 303, an input unit 304, an output unit 305, a communication unit 306, and an antenna 307.

The storage unit 301 is composed of memories such as ROM and RAM, and stores various information such as computer programs for performing various operations described below and communication parameters for wireless communication. ROM stands for Read Only Memory, and RAM stands for Random Access Memory. In addition to memories such as ROM and RAM, storage units 301 may also use storage media such as flexible disks, hard disks, optical disks, magneto-optical disks, CD-ROMs, CD-Rs, magnetic tapes, non-volatile memory cards, and DVDs. Storage unit 301 may also be equipped with multiple memories.

The control unit 302 is configured with one or more processors such as a CPU or MPU, and controls the entire communication device 202 by executing a computer program stored in the storage unit 301. The control unit 302 may control the entire communication device 202 in cooperation with the computer program stored in the storage unit 301 and an OS (Operating System). The control unit 302 also generates data and signals to be transmitted in communication with other communication devices. The CPU stands for Central Processing Unit, and the MPU stands for Micro Processing Unit. The control unit 302 may also include multiple processors such as a multi-core processor, and the entire communication device 202 may be controlled by the multiple processors.

The control unit 302 also controls the functional unit 303 to perform predetermined processes such as wireless communication, imaging, printing, and projection. The functional unit 303 is hardware that enables the communication device 202 to perform predetermined processes.

The input unit 304 receives various operations from the user. The output unit 305 outputs various types of information to the user via a monitor screen or a speaker. Here, the output by the output unit 305 may be a display on a monitor screen, a sound output by a speaker, a vibration output, or the like. Note that both the input unit 304 and the output unit 305 may be realized by a single module, such as a touch panel. Also, the input unit 304 and the output unit 305 may be integrated with the communication device 202, or may be separate.

The communication unit 306 controls wireless communication in accordance with the IEEE802.11EHT standard. In addition to the IEEE802.11EHT standard, the communication unit 306 may also control wireless communication in accordance with other IEEE802.11 series standards and wired communication such as wired LAN. The communication unit 306 controls the antenna 307 to transmit and receive signals for wireless communication generated by the control unit 302. If the communication device 202 supports the NFC standard, Bluetooth standard, etc. in addition to the IEEE802.11EHT standard, the communication unit 306 may control wireless communication in accordance with these communication standards. If the communication device 202 can perform wireless communication in accordance with multiple communication standards, the communication unit 306 and antenna 307 may be individually configured to support each communication standard. The communication device 202 communicates data such as image data, document data, and video data with the communication devices 203 to 205 via the communication unit 306. The antenna 307 may be configured as a separate unit from the communication unit 306, or may be configured together with the communication unit 306 as a single module.

Figure 3 shows an example of the configuration of a PHY frame of an EHT MU PPDU communicated by the communication device 202 in this embodiment. Note that PPDU is an abbreviation for Physical Layer (PHY) Protocol Data Unit.

An EHT MU PPDU is a PPDU used by a communication device conforming to the IEEE 802.11 EHT standard when performing MU communication. This frame is composed of L-STF 401, L-LTF 402, L-SIG 403, RL-SIG 404, EHT-SIG-A 405, EHT-SIG-B 406, EHT-STF 407, and EHT-LTF 408 from the beginning. In addition, EHT-LTF 408 is followed by Data 409 and Packet Extension 410. Note that the order of the fields in the EHT MU PPDU is not limited to this. STF stands for Short Training Field, LTF stands for Long Training Field, and SIG stands for Signal. L- stands for Legacy, for example, L-STF stands for Legacy Short Training Field. Similarly, EHT- stands for Extremely High Throughput, for example, EHT-STF stands for Extremely High Throughput Short Training Field. RL-SIG stands for Repeated Legacy Signal.

L-STF401, L-LTF402, and L-SIG403 are backward compatible with the IEEE802.11a/b/g/n/ac/ax standards, which are legacy standards established before the IEEE802.11EHT standard. In other words, L-STF401, L-LTF402, and L-SIG403 are legacy fields that can be decoded by communication devices that support IEEE802.11 series standards prior to IEEE802.11ax.

L-STF401 is used for detecting wireless packet signals, automatic gain control (AGC), timing detection, etc. L-LTF402 is used for high-precision frequency and time synchronization, and for acquiring propagation channel information (CSI, Channel State Information), etc. L-SIG403 is used to transmit control information including information on data transmission rate and packet length. Note that RL-SIG404 may be omitted.

EHT-SIG-A405, EHT-SIG-B406, EHT-STF407, and EHT-LTF408 are fields that can be decoded by a communication device that complies with the IEEE802.11EHT standard.

Note that L-STF401, L-LTF402, L-SIG403, RL-SIG404, EHT-SIG-A405, EHT-SIG-B406, EHT-STF407 and EHT-LTF408 are collectively referred to as the PHY preamble.

EHT-SIG-B406 consists of two fields: a common field and a user field.

The common field consists of the subfields shown in Table 1 below.

The RU Allocation subfield is a field consisting of N x 8 bits, and indicates information regarding the allocation of RUs. For example, when indicating the allocation of RUs when using a bandwidth of 20 MHz as the bandwidth, the RU Allocation subfield is composed of 8 bits (N = 1) and indicates the allocation of RUs in the bandwidth of 20 MHz. Since the IEEE 802.11 EHt standard allows the use of a maximum bandwidth of 320 MHz, the RU Allocation subfield indicates the allocation of RUs when using a maximum bandwidth of 320 MHz. Note that N is a value determined by the bandwidth used, and N = 1, 2, 4, or 8 is entered depending on the bandwidth used for data communication. The correspondence between N and each bandwidth (20 MHz, 40 MHz, 80 MHz, 160 MHz, and 320 MHz) is as shown in Table 1. Note that 80+80MHz refers to the use of two 80MHz bandwidths. 160+160MHz refers to the use of two 160MHz bandwidths.

Figure 4 shows an example of the correspondence between RU allocation patterns and RU Allocation subfields in a 20 MHz bandwidth. The minimum number of subcarriers constituting an RU is 26, and in a 20 MHz bandwidth, it can be divided into, for example, nine RUs each consisting of 26 subcarriers. As shown in Figure 4, when the bit string of RU Allocation is 00000000, it indicates that the 20 MHz bandwidth is divided and allocated into nine RUs with 26 subcarriers per RU. Also, when the bit string of RU Allocation is 00000001, it indicates that the 20 MHz bandwidth is divided and allocated into seven RUs with 26 subcarriers per RU and one RU with 52 subcarriers per RU.

Note that RUs with 106 or more subcarriers support MU MIMO communication. Therefore, for allocations that include RUs with 106 or more subcarriers, the bit string of RU Allocation indicates the number of STAs multiplexed in the RUs with 106 or more subcarriers. For example, if y2y1y0 is written, y0, y1, and y2 are each 0 or 1, indicating that 2^2×y2+2^1×y1+y0+1 STAs are multiplexed in the RUs with 106 or more subcarriers.

In network 201 of FIG. 2, when a bandwidth of 20 MHz is used, communication devices 203-205 decode the common field in EHT-SIG-B406 contained in the EHT MU PPDU received from communication device 202. In this case, since the bandwidth used is 20 MHz, the RU Allocation subfield in the common field is composed of 8 bits. Communication devices 203-205 communicate with communication device 202 according to the allocation of RUs indicated by the RU Allocation subfield.

Figure 5 shows an example of the configuration of the EHT-SIG-B field when communicating using a 320 MHz bandwidth. The RU allocation subfield indicates the allocation of an RU with 242 subcarriers per 8 bits. Also, a 20 MHz subband corresponds to an RU with 242 subcarriers. In other words, the RU Allocation subfield indicates the allocation of an RU in a 20 MHz subband per 8 bits.

When communicating using a 320 MHz bandwidth, the communication device 202 divides the band into 20 MHz subbands and allocates RUs to each subband. Note that the 320 MHz bandwidth can be divided into 16 20 MHz subbands, but the EHT-SIG-B field does not include RU Allocation for all subbands. As shown in FIG. 5, the communication device 202 generates and transmits an EHT-SIG-B field having information on the allocation of RUs in odd-numbered subbands and an EHT-SIG-B field having information on the allocation of RUs in even-numbered subbands, starting from the lowest frequency. In other words, the communication device 202 communicates EHT-SIG-B fields indicating the allocation of RUs in the first, third, fifth, seventh, ninth, eleventh, thirteenth, and fifteenth 20 MHz subbands every eight bits. In addition to the EHT-SIG-B field indicating the allocation of RUs in odd-numbered 20 MHz subbands, an EHT-SIG-B field indicating the allocation of RUs in even-numbered 20 MHz subbands is communicated. In this case, since the RU allocation subfield indicates the allocation of RUs with 8 bits per subband, 64 bits are required to indicate the allocation of RUs in 8 subbands. In this way, when communicating using a bandwidth of 320 MHz, communication device 202 communicates an EHT-SIG-B field including a 32-bit RU allocation subfield with communication devices 203 to 205.

Similarly, when using a bandwidth where N=2 or more, an EHT-SIG-B field containing information on the allocation of RUs to odd-numbered subbands and an EHT-SIG-B field containing information on the allocation of RUs to even-numbered subbands are generated and transmitted. Note that a bandwidth where N=2 or more is an 80 MHz bandwidth, a 160 MHz bandwidth, or one of two 160 MHz bandwidths.

In this way, communication device 202 can generate and transmit an EHT MU PPDU that includes an RU Allocation subfield to notify communication devices 203 to 205 of information regarding RU allocation.

In addition, communication devices 203 to 205 can obtain information regarding RU allocation by receiving an EHT MU PPDU that includes an RU allocation subfield.

Note that EHT-SIG-B is a field included in the EHT MU PPDU, but is not included in other PPDUs. Specifically, EHT-SIG-B is not included in the EHT SU (Single User) PPDU that is communicated when performing single-user communication (communication between an AP and a single STA). EHT-SIG-B is also not included in the EHT ER (Extended Range) SU PPDU that is communicated when performing single-user communication with an extended communication distance. EHT-SIG-B is also not included in the EHT TB (Trigger-Based) PPDU that is sent in response by a STA that has received a trigger frame from the AP.

Note that the method of allocating RUs indicated by the bit string of the RU Allocation subfield shown in this embodiment is merely an example. The method of allocating RUs indicated by the bit string of the RU Allocation subfield may be different from that of this embodiment.

In this embodiment, the communication device 202 is an AP in the network, but it may be a device that operates as a STA. In addition, the communication device 202 is a device that transmits an EHT MU PPDU, but it may be a device that receives it. In this case, the communication device 202 performs data communication with the device that sent the frame using the RU indicated by the RU allocation subfield included in the EHT-SIG-B of the received EHT MU PPDU.

In this embodiment, the PHY frame of the EHT MU PPDU includes a legacy field that can be decoded by a communication device compatible with the IEEE 802.11 series standard before the IEEE 802.11ax standard, but is not limited to this. Specifically, the PHY frame of the EHT MU PPDU may be configured not to include L-STF, L-LTF, L-SIG, and RL-SIG. In this case, the PHY frame of the EHT TB PPDU may be configured from the beginning with EHT-STF, EHT-LTF, EHT-SIG-A, EHT-SIG-B, EHT-LTF, a data field, and a Packet Extension. Note that the EHT-LTF following the EHT-SIG-B field may be omitted. For example, when communicating in the 6 GHz band, communication devices that only support standards prior to the IEEE 802.11ax standard will not receive signals, so communication may be performed using an EHT MU PPDU that does not include a legacy field.

In addition, the names of the fields, bit positions, and bit numbers used in this embodiment are not limited to those described in this embodiment, and similar information may be stored in the PHY frame with different field names, different positions, and different bit numbers.

Although the embodiments have been described above in detail, the present invention can be embodied, for example, as a system, device, method, program, or recording medium (storage medium). Specifically, the present invention may be applied to a system consisting of multiple devices (for example, a host computer, an interface device, an imaging device, a web application, etc.), or may be applied to an apparatus consisting of a single device.

The present invention can also be realized by supplying a program that realizes one or more of the functions of the above-mentioned embodiments to a system or device via a network or storage medium, and having one or more processors in the computer of the system or device read and execute the program. It can also be realized by a circuit (e.g., an ASIC) that realizes one or more of the functions.

301 Storage unit 302 Control unit 303 Functional unit 304 Input unit 305 Output unit 306 Communication unit 307 Antenna

Claims (45)

1. A communication device, comprising:
A transmission means for transmitting an EHT MU (Multi User) PPDU (Physical Layer Protocol Data Unit) including an L-STF (Legacy-Short Training Field), an L-LTF (Legacy-Long Training Field), an L-SIG (Legacy-Signal), an EHT-STF (Extremely High Throughput-Short Training Field), and an EHT-LTF (Extremely High Throughput-Long Training Field) following the EHT-STF,
In the EHT MU PPDU, the EHT-STF is arranged after the L-SIG, and a field indicating an allocation of an RU (Resource Unit) is included between the L-SIG and the EHT-STF, and when the communication device uses a bandwidth of 320 MHz, the field is composed of a number of bits obtained by multiplying a predetermined number of bits indicating an allocation of an RU in a subband of 20 MHz by 8. The communication device according to claim 1, characterized in that the transmitting means includes an antenna used to transmit the EHT MU PPDU. The communication device according to claim 1 or 2, characterized in that the transmitting means transmits the EHT MU PPDU when the communication device performs at least one of OFDMA (Orthogonal Frequency Division Multiple Access) communication and MU-MIMO (Multiple User Multiple-Input and Multiple-Output) communication. The communication device according to any one of claims 1 to 3, characterized in that, when transmitting a PPDU different from the EHT MU PPDU, the transmitting means transmits a PPDU that does not include the field. The communication device according to any one of claims 1 to 4, characterized in that the transmitting means transmits the EHT MU PPDU in accordance with the IEEE 802.11 EHT standard. The communication device according to any one of claims 1 to 5, characterized in that, when the communication device uses two 160 MHz bandwidths as a bandwidth, the field is composed of a number of bits obtained by multiplying a predetermined number of bits representing an allocation of RUs in a 20 MHz subband by 8. The communication device according to any one of claims 1 to 6, characterized in that, when the communication device uses a bandwidth of 20 MHz or a bandwidth of 40 MHz as a bandwidth, the field is composed of a predetermined number of bits representing the allocation of RUs in a subband of 20 MHz. The communication device according to any one of claims 1 to 7, characterized in that, when the communication device uses a bandwidth of 80 MHz, the field is composed of a number of bits obtained by multiplying a predetermined number of bits representing an allocation of an RU in a subband of 20 MHz by 2. The communication device according to any one of claims 1 to 8, characterized in that, when the communication device uses a bandwidth of 160 MHz as a bandwidth, the field is composed of a number of bits obtained by multiplying a predetermined number of bits representing an allocation of an RU in a subband of 20 MHz by 4. The communication device according to any one of claims 1 to 9, characterized in that the field indicates the allocation of RUs to subbands of odd numbers of 20 MHz from the lowest frequency for each of the predetermined number of bits. 11. The communication device according to claim 10, wherein the field indicates allocation of RUs in sub-bands of odd-numbered 20 MHz from the lowest frequency for each of the predetermined number of bits, and when transmitting the EHT MU PPDU, the transmitting means transmits the field using a first band among bands for transmitting the EHT MU PPDU, and transmits a second field indicating allocation of RUs in sub-bands of even-numbered 20 MHz from the lowest frequency for each of the predetermined number of bits, the second field having the same number of bits as the field, using a second band different from the first band among the bands for transmitting the EHT MU PPDU . The L-STF, the L-LTF, and the L-SIG are fields that can be decoded by a communication device that complies with the IEEE 802.11 series standard prior to the IEEE (Institute of Electrical and Electronics Engineers) 802.11ax standard. The communication device according to any one of claims 1 to 11 . 13. The communication device according to claim 1, wherein the predetermined number of bits is eight. 1. A communication device, comprising:
The communication device has a receiving means for receiving an EHT MU (Multi User) PPDU (Physical Layer Protocol Data Unit) including an L-STF (Legacy-Short Training Field), an L-LTF (Legacy-Long Training Field), an L-SIG (Legacy-Signal), an EHT-STF (Extremely High Throughput-Short Training Field), and an EHT-LTF (Extremely High Throughput-Long Training Field), from another communication device;
In the EHT MU PPDU, the EHT-STF is arranged after the L-SIG, and a field representing an allocation of an RU (Resource Unit) is included between the L-SIG and the EHT-STF, and when the other communication device uses a bandwidth of 320 MHz as a bandwidth, the field is composed of a number of bits obtained by multiplying a predetermined number of bits representing an allocation of an RU in a subband of 20 MHz by 8. 15. The communication device of claim 14 , wherein the receiving means includes an antenna used to receive the EHT MU PPDU. The communication device according to claim 14 or 15, wherein the receiving means receives the EHT MU PPDU when the other communication device performs at least one of OFDMA (Orthogonal Frequency Division Multiple Access) communication and MU - MIMO (Multiple User Multiple-Input and Multiple-Output) communication . 17. The communication device according to claim 14 , wherein the receiving means, when receiving a PPDU different from the EHT MU PPDU, receives a PPDU that does not include the field. 18. The communication device according to claim 14 , wherein the receiving means receives the EHT MU PPDU in compliance with the IEEE 802.11 EHT standard. A communication device as described in any one of claims 14 to 18, characterized in that when the other communication device uses two 160 MHz bandwidths as a bandwidth, the field is composed of a number of bits obtained by multiplying a predetermined number of bits representing an allocation of an RU in a 20 MHz subband by 8 . A communication device as described in any one of claims 14 to 19, characterized in that when the other communication device uses a bandwidth of 20 MHz or a bandwidth of 40 MHz as a bandwidth, the field is composed of a predetermined number of bits representing an allocation of an RU in a subband of 20 MHz. A communication device as described in any one of claims 14 to 20, characterized in that when the other communication device uses a bandwidth of 80 MHz as a bandwidth, the field is composed of a number of bits obtained by multiplying a predetermined number of bits representing an allocation of an RU in a subband of 20 MHz by 2 . A communication device according to any one of claims 14 to 21, characterized in that, when the other communication device uses a bandwidth of 160 MHz as a bandwidth, the field is composed of a number of bits obtained by multiplying a predetermined number of bits representing an allocation of an RU in a subband of 20 MHz by 4 . 23. The communication device according to claim 14 , wherein the field indicates, for each of the predetermined number of bits, an allocation of RUs to sub-bands of odd numbers of 20 MHz from a lowest frequency. 24. The communication device according to claim 23, wherein the field indicates allocation of RUs in sub-bands of odd numbers of 20 MHz from the lowest frequency for each of the predetermined number of bits, and the receiving means, when receiving the EHT MU PPDU, receives the field using a first band among bands for receiving the EHT MU PPDU, and receives a second field indicating allocation of RUs in sub-bands of even numbers of 20 MHz from the lowest frequency for each of the predetermined number of bits, the second field having the same number of bits as the field, using a second band different from the first band among the bands for receiving the EHT MU PPDU . The L-STF, the L-LTF, and the L-SIG are fields that can be decoded by a communication device that complies with the IEEE 802.11 series standard prior to the IEEE (Institute of Electrical and Electronics Engineers) 802.11ax standard. The communication device according to any one of claims 14 to 24 . 26. The communication device according to claim 14 , wherein the predetermined number of bits is eight. An information processing device,
The present invention has a generating means for generating an EHT MU (Multi User) PPDU (Physical Layer Protocol Data Unit) including an L-STF (Legacy-Short Training Field), an L-LTF (Legacy-Long Training Field), an L-SIG (Legacy-Signal), an EHT-STF (Extremely High Throughput-Short Training Field), and an EHT-LTF (Extremely High Throughput-Long Training Field),
In the EHT MU PPDU generated by the generating means, the EHT-STF is arranged after the L-SIG, and a field representing an allocation of an RU (Resource Unit) is included between the L-SIG and the EHT-STF, and when the information processing device uses a bandwidth of 320 MHz as a bandwidth, the field is composed of a number of bits obtained by multiplying a predetermined number of bits representing an allocation of an RU in a subband of 20 MHz by 8. The information processing device according to claim 27, wherein the generating means generates the EHT MU PPDU when the information processing device executes at least one of Orthogonal Frequency Division Multiple Access (OFDMA) communication and Multi-User Multiple-Input and Multiple-Output (MU-MIMO) communication. 29. The information processing apparatus according to claim 27 , wherein said generating means generates a PPDU that does not include said field when generating a PPDU different from said EHT MU PPDU. 30. The information processing apparatus according to claim 27 , wherein the generating means generates the EHT MU PPDU in compliance with the IEEE 802.11 EHT standard. An information processing device as described in any one of claims 27 to 30, characterized in that when the information processing device uses two 160 MHz bandwidths as a bandwidth, the field is composed of a number of bits obtained by multiplying a predetermined number of bits representing an allocation of RUs in a 20 MHz subband by 8 . An information processing device as claimed in any one of claims 27 to 31, characterized in that when the information processing device uses a bandwidth of 20 MHz or a bandwidth of 40 MHz as a bandwidth, the field is composed of a predetermined number of bits representing an allocation of RUs in a subband of 20 MHz. An information processing device as described in any one of claims 27 to 32, characterized in that when the information processing device uses a bandwidth of 80 MHz as a bandwidth, the field is composed of a number of bits obtained by multiplying a predetermined number of bits representing an allocation of an RU in a subband of 20 MHz by 2 . An information processing device as described in any one of claims 27 to 33, characterized in that when the information processing device uses a bandwidth of 160 MHz as a bandwidth, the field is composed of a number of bits obtained by multiplying a predetermined number of bits representing an allocation of an RU in a subband of 20 MHz by 4 . 35. The information processing device according to claim 27 , wherein the field indicates, for each of the predetermined number of bits, an allocation of RUs in odd-numbered subbands of 20 MHz from the lowest frequency. 36. The information processing device according to claim 27, wherein the field indicates allocation of RUs in sub-bands of 20 MHz that are odd-numbered from the lowest frequency for each of the predetermined number of bits, the information processing device further comprises a transmitting means for transmitting the PPDU generated by the generating means, and when transmitting the EHT MU PPDU, the transmitting means transmits the field using a first band among bands for transmitting the EHT MU PPDU, and transmits a second field indicating allocation of RUs in sub-bands of 20 MHz that are even-numbered from the lowest frequency for each of the predetermined number of bits, the second field having the same number of bits as the field, using a second band different from the first band among the bands for transmitting the EHT MU PPDU. The L-STF, the L-LTF, and the L-SIG are fields that can be decoded by an information processing device that complies with the IEEE 802.11 series standard prior to the IEEE (Institute of Electrical and Electronics Engineers) 802.11ax standard. The information processing device according to any one of claims 27 to 36 . 38. The information processing device according to claim 27 , further comprising an antenna used for transmitting the EHT MU PPDU generated by the generating means. 39. The information processing apparatus according to claim 27 , wherein the predetermined number of bits is eight. A method for controlling a communication device, comprising:
A Multi User (EHT) PPDU (Physical Layer Protocol Data Unit) including an L-STF (Legacy-Short Training Field), an L-LTF (Legacy-Long Training Field), an L-SIG (Legacy-Signal), an EHT-STF (Extremely High Throughput-Short Training Field), and an EHT-LTF (Extremely High Throughput-Long Training Field). a transmitting step of transmitting a Physical Layer Protocol Data Unit (PPDU) for a User;
a control method comprising: in the EHT MU PPDU, the EHT-STF is arranged after the L-SIG; and a field indicating an allocation of an RU (Resource Unit) is included between the L-SIG and the EHT-STF; and when the communication device uses a bandwidth of 320 MHz, the field is composed of a number of bits obtained by multiplying a predetermined number of bits indicating an allocation of an RU in a subband of 20 MHz by 8. A method for controlling a communication device, comprising:
The method includes a receiving step of receiving an EHT MU (Multi User) PPDU (Physical Layer Protocol Data Unit) including an L-STF (Legacy-Short Training Field), an L-LTF (Legacy-Long Training Field), an L-SIG (Legacy-Signal), an EHT-STF (Extremely High Throughput-Short Training Field), and an EHT-LTF (Extremely High Throughput-Long Training Field), from another device;
In the EHT MU PPDU, the EHT-STF is arranged after the L-SIG, and a field representing an allocation of a Resource Unit (RU) is included between the L-SIG and the EHT-STF, and when the other device uses a bandwidth of 320 MHz as a bandwidth, the field is composed of a number of bits obtained by multiplying a predetermined number of bits representing an allocation of an RU in a subband of 20 MHz by 8. A method for controlling an information processing device, comprising:
A Multi User (EHT) PPDU (Physical Layer Protocol Data Unit) including an L-STF (Legacy-Short Training Field), an L-LTF (Legacy-Long Training Field), an L-SIG (Legacy-Signal), an EHT-STF (Extremely High Throughput-Short Training Field), and an EHT-LTF (Extremely High Throughput-Long Training Field) A generating step of generating a PPDU,
a control method for generating the EHT MU PPDU, the EHT-STF being arranged after the L-SIG, and a field representing an allocation of a Resource Unit (RU) being included between the L-SIG and the EHT-STF, and when the information processing device uses a bandwidth of 320 MHz as a bandwidth, the field is composed of a number of bits obtained by multiplying a predetermined number of bits representing an allocation of an RU in a subband of 20 MHz by 8. A program for causing a computer to function as each of the means of the communication device according to any one of claims 1 to 13 . A program for causing a computer to function as each of the means of the communication device according to any one of claims 14 to 26 . A program for causing a computer to function as each of the means of the information processing device according to any one of claims 27 to 39 .

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